EP0789419B1 - Device and method for transmission of information for systems with radiating waveguides - Google Patents

Device and method for transmission of information for systems with radiating waveguides Download PDF

Info

Publication number
EP0789419B1
EP0789419B1 EP97400236A EP97400236A EP0789419B1 EP 0789419 B1 EP0789419 B1 EP 0789419B1 EP 97400236 A EP97400236 A EP 97400236A EP 97400236 A EP97400236 A EP 97400236A EP 0789419 B1 EP0789419 B1 EP 0789419B1
Authority
EP
European Patent Office
Prior art keywords
mobile
resonant cavity
energy
resonant
radiating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97400236A
Other languages
German (de)
French (fr)
Other versions
EP0789419A1 (en
Inventor
Marc GEC Alsthom Transport SA Heddebaut
Jean GEC Alsthom Transport SA Rioult
Marion Inrets Berbineau
Denis Duhot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transport SA
Original Assignee
GEC Alsthom Transport SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom Transport SA filed Critical GEC Alsthom Transport SA
Priority to SI9730299T priority Critical patent/SI0789419T1/en
Publication of EP0789419A1 publication Critical patent/EP0789419A1/en
Application granted granted Critical
Publication of EP0789419B1 publication Critical patent/EP0789419B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/021—Measuring and recording of train speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/023—Determination of driving direction of vehicle or train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/16—Continuous control along the route
    • B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
    • B61L3/227—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using electromagnetic radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0037—Particular feeding systems linear waveguide fed arrays
    • H01Q21/0043—Slotted waveguides

Definitions

  • the present invention relates to devices and methods of transmitting information, in general, and relates, more particularly, to a device and a information transmission method for guide system of radiating waves.
  • This system is likely to locate mobiles traveling along the radiating waveguide.
  • This location is based on the use of specific location slots.
  • These location slots are complementary to the slots regularly arranged continuously along the guide of radiating waves and are perpendicular to these slits regular.
  • Information relating to the location of mobiles is only accessible on the fly, i.e. when the mobile moves along the radiating waveguide.
  • the mobile is in the area of garage workshop or in the parking area or at the entrance to station.
  • Document EP 529 581 discloses a system of localization by microwave electromagnetic waves using a waveguide to know the position of a mobile by injection into the waveguide of one or several frequencies each including a message of particular location and by filtering out level of each tag the only message intended for the tag concerned.
  • the advantage of such a system is that it allows localization of a mobile whether or not it is stopped on a tag, but has the disadvantage of not allow the transmission of locally generated information.
  • An object of the invention is therefore a device for transmission of information for waveguide system radiant.
  • Another object of the invention is a method of transmission of information for waveguide system radiant.
  • the information transmission device for radiating waveguide system of the invention satisfies also to any of the characteristics according to attached subclaims.
  • the system information transmission method with a radiating waveguide of the invention also satisfies to any of the features according to the subclaims attached.
  • the information transmission device for radiating waveguide system of the invention can be example title entirely created using a section short radiating waveguide right, dimension close to the wavelength in the air of signals propagated in the radiating waveguide.
  • An advantage of the device and the method of transmission of information for waveguide system radiant of the invention is to take only one energy very reduced, about 0.02 dB, on the waveguide radiant and therefore to be able to have transmission as frequently as the exploitation of movable along the radiating waveguide requires it.
  • Another advantage of the device and the method of transmission of information for waveguide system radiant of the invention is to achieve a simple set, autonomous and provided with a minimum of components and connections.
  • Another advantage of the device and the method of transmission of information for waveguide system radiant of the invention is not to require a source of continuous energy.
  • Another advantage of the device and the method of transmission of information for waveguide system beaming from the invention is to be likely to provide a precise location pulse signal.
  • Another advantage of the device and the method of transmission of information for waveguide system radiating from the invention is to be likely to indicate the direction of movement of the mobile without ambiguity.
  • the IAGO system uses the large bandwidth of a microwave waveguide operating in TE 01 mode to authorize in particular the transmission of high-speed information between ground and mobiles.
  • This large bandwidth also allows transmit in the waveguide radiating a wave additional unmodulated carrier.
  • Such an unmodulated carrier wave is emitted at low level and is propagated all along the waveguide radiant.
  • This unmodulated carrier wave undergoes little attenuation and is amplified by the same repeaters online than those exploited to regenerate others signals transmitted in the radiating waveguide.
  • the unmodulated carrier wave is therefore present on the entire length of the essentially radiating waveguide inside the guide.
  • This unmodulated carrier wave is not discernible from the mobile and also does not carry the origin identifiable information or signature.
  • the device and the information transmission method for guide system of radiating waves are such that they consist in taking along the waveguide radiant and in strategic places to the exploitation of mobiles part of the energy is indistinguishable in the waveguide in the overall energy balance.
  • the energy withdrawn is radiated to the mobile.
  • Figure 1 is a general view of the device transmission of information for waveguide system radiating according to the preferred embodiment of the invention.
  • the mobile (not shown) is a railway vehicle.
  • the mobiles can be trolleys or any other means mobile.
  • a resonant cavity 1 is arranged on one side of the radiating waveguide 2.
  • the radiating waveguide 2 and the resonant cavity 1 each have, on their facing sides, a directional coupler, respectively 3 and 4.
  • the directional couplers are made, for example, two large circular openings per compared to the period of the unmodulated carrier wave.
  • Figure 2 shows the radiating waveguide of the Figure 1 transmission device and its coupler directive.
  • FIG. 3A represents the resonant cavity of the Figure 1 transmission device and its coupler directive.
  • the radiating waveguide operates in TE 01 mode. There is therefore practically no electric field on the lateral sides of this radiating waveguide.
  • Such an embodiment makes it possible to obtain repeated coupling coefficients on the order of -40 dB compared to the power level transmitted in the guide of radiating waves.
  • the length of the resonant cavity 1 is as small as possible so that the interior volume of this resonant cavity resonates in the cavity according to a fundamental mode TE 011 .
  • any directivity is eliminated and the coupling coefficient remains identical whether the radiating waveguide is supplied upstream or downstream.
  • the TE 011 fundamental mode resonant cavity is short-circuited at its ends and has a resonant half-wave slot 5.
  • the resonant half-wave slot is made on the large outer face of the resonant cavity facing the rail vehicle.
  • the resonant half-wave slot is oriented perpendicular to the slots 6 of the radiating waveguide.
  • This half-wave resonant slot radiates the coupled energy from the radiating waveguide to the resonant cavity in TE 011 mode.
  • the radiation from the resonant half-wave slit takes place in linear polarization perpendicular to regular slots of the radiating waveguide.
  • This radiation thus authorizes a decoupling of the order by 15 dB compared to the signals transmitted by the slots of transmission and speed measurement of the waveguide.
  • the carrier wave propagating in the waveguide which is a pure sinusoidal signal, is locally coupled to the rail vehicle by means of the resonant cavity and its resonant half-wave slot.
  • This sinusoidal signal is locally modulated.
  • a modulation device by example a Schottky type diode, is placed between the edges of the half-wave resonant slit at a point of high impedance at the desired frequency.
  • FIG. 3B represents the resonant cavity and its modulation device.
  • This diode is polarized by means of a current applied to its terminals and is likely to short-circuit the resonant half-wave slit to the rhythm of the polarization, the slit presenting at this point and for the working frequency considered a point of high impedance.
  • the coupling coefficient existing between the guide of radiating waves and the resonant cavity being of the order of -40 dB, the mismatch linked to this short circuit to the rhythm modulation is not detectable in the waveguide radiant.
  • the modulated signal is only fed back to -80 dB below reference level towards the radiating waveguide, ie - 40 dB in the waveguide direction radiating towards cavity resonant and -40 dB in the direction of resonant cavity towards guide of radiating waves.
  • the modulated signal produced in the resonant cavity is therefore neither transmitted along the radiating waveguide, nor passed upstream or downstream of the resonant cavity.
  • a device 8 generates the signal representing the information to be transmitted to the rail vehicle.
  • This signal representing the information to be transmitted is for example a signal composed of a binary sequence.
  • the possible bit rate is important and is not limited only by switching times of the Schottky diode and the frequency of the pure sinusoidal signal.
  • the device 8 generating the signal representing the information to be transmitted may include a picocontroller type device memorizing on a memory of the EEPROM type a frame and generating this frame so repetitive to the Schottky diode from then that energy is supplied to it.
  • the energy present in the resonant cavity being very low, around 40 dB below the power level present in the radiating waveguide, it is possible to judiciously arrange the device 8 generating the signal representing the information to be transmitted inside the resonant cavity without significantly disturbing either the functioning of this electronic circuit, nor the resonance in fundamental mode of the resonant cavity.
  • FIG. 3C represents the resonant cavity and its device generating the signal representing the information to transmit.
  • the power of this device 8 generating the signal representing the information to be transmitted can advantageously be supplied by remote power to by means of a low frequency signal operating at a few hundreds of kilo hertz or even a few mega hertz.
  • Figure 4 is a general view of the device transmission of information and its remote power device.
  • This low frequency signal is magnetically coupled to the resonant cavity by means of two resonant loops 9, 10A or 10B.
  • a first resonant loop 9 of the series type is associated with energy emission and a second resonant loop 10A, 10B of the parallel type is associated with energy reception, emission and reception of energy being carried out at the remote power frequency.
  • the energy emission loop 9 is integral with the rail vehicle (not shown) and generates permanence a little energy, for example worth less than a watt, for at least one loop energy receiver 10A, 10B integral with the cavity resonant 1.
  • the energy reception loop 10A, 10B remotely powers the device 8 generating the signal representing information to be transmitted when the vehicle passes rail.
  • the signal representing the information to be transmitted to the rail vehicle will only be generated when the device 8 generating the signal representing the information to transmit will be powered by remote power.
  • a first energy reception loop 10A is arranged upstream of the resonant cavity 1 and supplied, when approaching or when moving away from the railway vehicle, a continuous supply voltage V 1
  • a second energy reception loop 10B is arranged downstream of the resonant cavity 1 and supplied when moving away from or when approaching the railway vehicle a continuous supply voltage V 2 .
  • the device 8 generating the signal representing the information to be transmitted can thus be remotely supplied continuously during the passage of the railway vehicle from upstream downstream of the resonant cavity or vice versa.
  • the transition from DC voltage V 1 to DC voltage V 2 or vice versa can be used to provide a signal for the railway vehicle to pass over the resonant cavity.
  • the transition from DC voltage V 1 to DC voltage V 2 can also be used to provide a signal indicating the direction of passage upstream to downstream of the rail vehicle.
  • the transition from DC voltage V 2 to DC voltage V 1 can also be used to provide a signal indicating the direction of passage downstream to upstream of the rail vehicle.
  • FIG. 5 represents an embodiment of the modulated carrier wave receiving device arranged on the mobile.
  • This reception device 11 consists of a antenna 12 connected to an amplification chain 13, filtering at the frequency of the pure sinusoidal signal and amplitude detection and has the function of reproducing the information transmitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Traffic Control Systems (AREA)
  • Waveguide Aerials (AREA)
  • Radio Relay Systems (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Optical Communication System (AREA)

Abstract

The device includes a cavity resonator (1) which lies on one side of the waveguide (2) and is short-circuited at its ends. The resonator resonates in a fundamental TE011 mode. The coupler comprises holes in the guide and the cavity and the resonant slot, lying at right angles to the slots in the waveguide, is directed from the large surface of the cavity towards the mobile unit. A Schottky diode, acting as a modulator (7), is positioned between the edges of the resonant slot and a point of high impedance at the required frequency. A device within the cavity generates the information signal to the diode which may short-circuit the slot depending on the signal polarity.

Description

La présente invention concerne les dispositifs et les procédés de transmission d'informations, en général, et porte, plus particulièrement, sur un dispositif et un procédé de transmission d'informations pour système à guide d'ondes rayonnant.The present invention relates to devices and methods of transmitting information, in general, and relates, more particularly, to a device and a information transmission method for guide system of radiating waves.

Le système IAGO, pour informatisation et automatisation par guide d'ondes rayonnant, de la demanderesse est par exemple décrit dans le document "THE USE OR RADIATING WAVEGUIDES IN GUIDED TRANSPORTATION SYSTEMS" de Marc HEDDEBAUT et Marion BERBINEAU numéro spécial N°8, édité par l'Institut National de Recherche sur les Transports et leur Sécurité.The IAGO system, for computerization and automation by radiating waveguide, plaintiff is for example described in the document "THE USE OR RADIATING WAVEGUIDES IN GUIDED TRANSPORTATION SYSTEMS "by Marc HEDDEBAUT and Marion BERBINEAU number special N ° 8, published by the National Research Institute on Transport and their Safety.

Ce système est susceptible de localiser des mobiles circulant le long du guide d'ondes rayonnant.This system is likely to locate mobiles traveling along the radiating waveguide.

Cette localisation est basée sur l'utilisation de fentes spécifiques de localisation.This location is based on the use of specific location slots.

Ces fentes de localisation sont complémentaires aux fentes régulièrement disposées continûment le long du guide d'ondes rayonnant et sont perpendiculaires à ces fentes régulières.These location slots are complementary to the slots regularly arranged continuously along the guide of radiating waves and are perpendicular to these slits regular.

Les fentes régulières permettent la transmission à grand débit d'informations ainsi que la mesure de la vitesse des mobiles.Regular slots allow transmission to large information flow as well as speed measurement mobiles.

L'information relative à la localisation des mobiles n'est cependant accessible qu'au vol, c'est à dire lorsque le mobile se déplace le long du guide d'ondes rayonnant.Information relating to the location of mobiles however, is only accessible on the fly, i.e. when the mobile moves along the radiating waveguide.

Dans certaines applications, le mobile est en zone de garage atelier ou en zone de stationnement ou en entrée de station. Pour de telles applications, il est nécessaire de disposer d'un dispositif de transmission d'informations pouvant être lu lorsque le mobile est arrêté voire stationné au-dessus de ce dispositif de transmission d'informations.In some applications, the mobile is in the area of garage workshop or in the parking area or at the entrance to station. For such applications, it is necessary to have an information transmission device can be read when the mobile is stopped or even parked above this information transmission device.

Pour des applications dans lesquelles le mobile se déplace le long du guide d'ondes rayonnant, il est nécessaire de disposer d'un dispositif de transmission d'informations à haut débit.For applications in which the mobile is moves along the radiating waveguide it's necessary to have a transmission device broadband information.

Le document EP 529 581 divulgue un système de localisation par ondes électromagnétique hyperfréquence utilisant un guide d'onde permettant de connaítre la position d'un mobile par injection dans le guide d'ondes d'une ou plusieurs fréquences comportant chacune un message de localisation particulier et en prélevant par filtrage au niveau de chaque balise le seul message destiné à la balise concernée. Un tel système présente l'avantage de permettre la localisation un mobile que celui-ci soit arrêté ou non sur une balise, mais présente toutefois l'inconvénient de ne pas permettre la transmission d'informations générées localement.Document EP 529 581 discloses a system of localization by microwave electromagnetic waves using a waveguide to know the position of a mobile by injection into the waveguide of one or several frequencies each including a message of particular location and by filtering out level of each tag the only message intended for the tag concerned. The advantage of such a system is that it allows localization of a mobile whether or not it is stopped on a tag, but has the disadvantage of not allow the transmission of locally generated information.

Un but de l'invention est donc un dispositif de transmission d'informations pour système à guide d'ondes rayonnant.An object of the invention is therefore a device for transmission of information for waveguide system radiant.

Un autre but de l'invention est un procédé de transmission d'informations pour système à guide d'ondes rayonnant.Another object of the invention is a method of transmission of information for waveguide system radiant.

Conformément à l'invention, le dispositif de transmission d'informations pour système à guide d'ondes rayonnant, guide d'ondes le long duquel se déplace un mobile, est caractérisé en ce qu'il comporte :

  • des moyens pour injecter une onde porteuse non modulée dans ledit guide d'ondes rayonnant,
  • des moyens de prélèvement ponctuel, le long dudit guides d'ondes rayonnant, d'une partie de l'énergie de ladite onde porteuse non modulée,
  • des moyens de modulation pour appliquer à ladite onde porteuse non modulée un signal de modulation local représentant l'information destinée audit mobile, et
  • des moyens pour rayonner, à destination dudit mobile, ladite onde porteuse modulée.
In accordance with the invention, the information transmission device for a radiating waveguide system, waveguide along which a mobile moves, is characterized in that it comprises:
  • means for injecting an unmodulated carrier wave into said radiating waveguide,
  • means for the punctual sampling, along said radiating waveguide, of part of the energy of said unmodulated carrier wave,
  • modulation means for applying to said unmodulated carrier wave a local modulation signal representing the information intended for said mobile, and
  • means for radiating, to said mobile, said modulated carrier wave.

Le dispositif de transmission d'informations pour système à guide d'ondes rayonnant de l'invention satisfait également à l'une quelconque des caractéristiques selon les sous-revendications jointes.The information transmission device for radiating waveguide system of the invention satisfies also to any of the characteristics according to attached subclaims.

Conformément à l'invention, le procédé de transmission d'informations pour système à guide d'ondes rayonnant, guides d'ondes le long duquel se déplace un mobile, se caractérise en ce qu'il comporte les étapes principales consistant à :

  • injecter une onde porteuse non modulée dans ledit guide d'ondes rayonnant,
  • prélever ponctuellement, le long dudit guide d'ondes rayonnant, une partie de l'énergie de ladite onde porteuse non modulée,
  • appliquer à ladite onde porteuse non modulée un signal de modulation local représentant l'information destinée audit mobile, et
  • rayonner, à destination dudit mobile, ladite onde porteuse modulée.
According to the invention, the method of transmitting information for a radiating waveguide system, waveguides along which a mobile moves, is characterized in that it comprises the main steps consisting in:
  • injecting an unmodulated carrier wave into said radiating waveguide,
  • punctually, along said radiating waveguide, part of the energy of said unmodulated carrier wave,
  • applying to said unmodulated carrier wave a local modulation signal representing the information intended for said mobile, and
  • radiate, to said mobile, said modulated carrier wave.

Le procédé de transmission d'informations pour système à guide d'ondes rayonnant de l'invention satisfait également à l'une quelconque des caractéristiques selon les sous-revendications jointes.The system information transmission method with a radiating waveguide of the invention also satisfies to any of the features according to the subclaims attached.

Le dispositif de transmission d'informations pour système à guide d'ondes rayonnant de l'invention peut être à titre d'exemple entièrement réalisé à l'aide d'une section droite de guide d'ondes rayonnant de courte longueur, dimension voisine de la longueur d'onde dans l'air des signaux propagés dans le guide d'ondes rayonnant.The information transmission device for radiating waveguide system of the invention can be example title entirely created using a section short radiating waveguide right, dimension close to the wavelength in the air of signals propagated in the radiating waveguide.

Une telle technologie a été employée pour la réalisation de la maquette élaborée originellement dans les laboratoires de l'Institut National de Recherche sur les Transports et leur Sécurité.Such technology has been used for the realization of the model originally developed in National Research Institute laboratories on Transport and their Safety.

Un avantage du dispositif et du procédé de transmission d'informations pour système à guide d'ondes rayonnant de l'invention est de ne prélever qu'une énergie très réduite, environ 0,02 dB, sur le guide d'ondes rayonnant et donc de pouvoir disposer de dispositifs de transmission aussi fréquemment que l'exploitation des mobiles le long du guide d'ondes rayonnant le nécessite.An advantage of the device and the method of transmission of information for waveguide system radiant of the invention is to take only one energy very reduced, about 0.02 dB, on the waveguide radiant and therefore to be able to have transmission as frequently as the exploitation of movable along the radiating waveguide requires it.

Un autre avantage du dispositif et du procédé de transmission d'informations pour système à guide d'ondes rayonnant de l'invention est de réaliser un ensemble simple, autonome et muni d'un minimum de composants et de connexions.Another advantage of the device and the method of transmission of information for waveguide system radiant of the invention is to achieve a simple set, autonomous and provided with a minimum of components and connections.

Un autre avantage du dispositif et du procédé de transmission d'informations pour système à guide d'ondes rayonnant de l'invention est de ne pas nécessiter de source d'énergie continue. Another advantage of the device and the method of transmission of information for waveguide system radiant of the invention is not to require a source of continuous energy.

Un autre avantage du dispositif et du procédé de transmission d'informations pour système à guide d'ondes rayonnant de l'invention est d'être susceptible de fournir un signal impulsionnel de localisation précis.Another advantage of the device and the method of transmission of information for waveguide system beaming from the invention is to be likely to provide a precise location pulse signal.

Un autre avantage du dispositif et du procédé de transmission d'informations pour système à guide d'ondes rayonnant de l'invention est d'être susceptible d'indiquer le sens de marche du mobile sans ambiguïté.Another advantage of the device and the method of transmission of information for waveguide system radiating from the invention is to be likely to indicate the direction of movement of the mobile without ambiguity.

D'autres buts, caractéristiques et avantages de l'invention apparaítront à la lecture de la description du mode de réalisation préféré du dispositif et du procédé de transmission d'informations pour système à guide d'ondes rayonnant, description faite en liaison avec les dessins dans lesquels:

  • la figure 1 est une vue générale du dispositif de transmission d'informations pour système à guide d'ondes rayonnant conforme au mode préféré de réalisation de l'invention,
  • la figure 2 représente le guide d'ondes rayonnant et son coupleur directif du dispositif de transmission de la figure 1,
  • la figure 3A représente la cavité résonante du dispositif de transmission de la figure 1,
  • la figure 3B représente la face supérieure de la cavité résonante et son dispositif de modulation,
  • la figure 3C représente la cavité résonante et son dispositif générant le signal représentant l'information à transmettre,
  • la figure 4 est une vue générale du dispositif de transmission d'informations et de son dispositif de télé-alimentation,
  • la figure 5 représente un mode de réalisation du dispositif de réception de l'onde porteuse modulée disposé sur le mobile.
Other objects, characteristics and advantages of the invention will appear on reading the description of the preferred embodiment of the device and of the method of transmitting information for a radiating waveguide system, description made in conjunction with the drawings. wherein:
  • FIG. 1 is a general view of the information transmission device for a radiating waveguide system according to the preferred embodiment of the invention,
  • FIG. 2 represents the radiating waveguide and its directional coupler of the transmission device of FIG. 1,
  • FIG. 3A represents the resonant cavity of the transmission device of FIG. 1,
  • FIG. 3B represents the upper face of the resonant cavity and its modulation device,
  • FIG. 3C represents the resonant cavity and its device generating the signal representing the information to be transmitted,
  • FIG. 4 is a general view of the information transmission device and of its remote supply device,
  • FIG. 5 represents an embodiment of the device for receiving the modulated carrier wave arranged on the mobile.

Le système IAGO exploite la grande bande passante d'un guide d'ondes hyperfréquence fonctionnant en mode TE01 pour autoriser notamment la transmission d'informations à grand débit entre sol et mobiles.The IAGO system uses the large bandwidth of a microwave waveguide operating in TE 01 mode to authorize in particular the transmission of high-speed information between ground and mobiles.

Cette bande passante importante permet en outre de transmettre dans le guide d'ondes rayonnant une onde porteuse supplémentaire non modulée.This large bandwidth also allows transmit in the waveguide radiating a wave additional unmodulated carrier.

Une telle onde porteuse non modulée est émise à bas niveau et est propagée tout le long du guide d'ondes rayonnant.Such an unmodulated carrier wave is emitted at low level and is propagated all along the waveguide radiant.

Cette onde porteuse non modulée subit peu d'atténuation et est amplifiée au moyen des mêmes répéteurs en ligne que ceux exploités pour régénérer les autres signaux transmis dans le guide d'ondes rayonnant.This unmodulated carrier wave undergoes little attenuation and is amplified by the same repeaters online than those exploited to regenerate others signals transmitted in the radiating waveguide.

L'onde porteuse non modulée est donc présente sur toute la longueur du guide d'ondes rayonnant essentiellement à l'intérieur du guide.The unmodulated carrier wave is therefore present on the entire length of the essentially radiating waveguide inside the guide.

Cette onde porteuse non modulée n'est pas discernable depuis le mobile et ne porte pas non plus à l'origine d'informations ou de signature identifiable.This unmodulated carrier wave is not discernible from the mobile and also does not carry the origin identifiable information or signature.

Conformément à l'invention, le dispositif et le procédé de transmission d'informations pour système à guide d'ondes rayonnant, par exemple le système IAGO, sont tels qu'ils consistent à prélever le long du guide d'ondes rayonnant et en des endroits stratégiques pour l'exploitation des mobiles une partie de l'énergie se propageant dans le guide d'ondes de manière indiscernable dans le bilan énergétique global.In accordance with the invention, the device and the information transmission method for guide system of radiating waves, for example the IAGO system, are such that they consist in taking along the waveguide radiant and in strategic places to the exploitation of mobiles part of the energy is indistinguishable in the waveguide in the overall energy balance.

L'énergie prélevée est rayonnée à destination du mobile.The energy withdrawn is radiated to the mobile.

Lors de cette étape, on applique sur l'onde porteuse non modulée un signal de modulation local, signal que l'on souhaite délivrer au mobile circulant le long du guide d'ondes.During this step, we apply to the carrier wave not modulated a local modulation signal, signal that one wishes to deliver to the mobile circulating along the guide waves.

La figure 1 est une vue générale du dispositif de transmission d'informations pour système à guide d'ondes rayonnant conforme au mode préféré de réalisation de l'invention. Figure 1 is a general view of the device transmission of information for waveguide system radiating according to the preferred embodiment of the invention.

Dans le mode préféré de réalisation du dispositif de transmission d'informations pour système à guide d'ondes rayonnant de l'invention, le mobile (non représenté) est un véhicule ferroviaire.In the preferred embodiment of the transmission of information for waveguide system radiating from the invention, the mobile (not shown) is a railway vehicle.

Il est clair que dans d'autres domaines d'application, les mobiles peuvent être des chariots ou tout autres moyens mobiles.It is clear that in other fields of application, the mobiles can be trolleys or any other means mobile.

Comme représenté à la figure 1, une cavité résonante 1 est disposée sur un côté du guide d'ondes rayonnant 2.As shown in Figure 1, a resonant cavity 1 is arranged on one side of the radiating waveguide 2.

Le guide d'ondes rayonnant 2 et la cavité résonante 1 comportent chacun, sur leurs côtés se faisant face, un coupleur directif, respectivement 3 et 4.The radiating waveguide 2 and the resonant cavity 1 each have, on their facing sides, a directional coupler, respectively 3 and 4.

Les coupleurs directifs sont constitués, par exemple, de deux ouvertures circulaires de tailles importantes par rapport à la période de l'onde porteuse non modulée.The directional couplers are made, for example, two large circular openings per compared to the period of the unmodulated carrier wave.

La figure 2 représente le guide d'ondes rayonnant du dispositif de transmission de la figure 1 et son coupleur directif.Figure 2 shows the radiating waveguide of the Figure 1 transmission device and its coupler directive.

La figure 3A représente la cavité résonante du dispositif de transmission de la figure 1 et son coupleur directif.FIG. 3A represents the resonant cavity of the Figure 1 transmission device and its coupler directive.

Dans le système IAGO, le guide d'ondes rayonnant fonctionne en mode TE01. Il n'existe dés lors pratiquement pas de champ électrique sur les côtés latéraux de ce guide d'ondes rayonnant.In the IAGO system, the radiating waveguide operates in TE 01 mode. There is therefore practically no electric field on the lateral sides of this radiating waveguide.

La taille des ouvertures doit donc être grande pour autoriser le niveau de couplage requis; de ce fait, cette dimension devient mécaniquement peu critique.The size of the openings must therefore be large to authorize the level of coupling required; because of this, this dimension becomes mechanically uncritical.

Une telle réalisation permet d'obtenir de manière répétée des coefficients de couplage de l'ordre de -40 dB par rapport au niveau de puissance transmis dans le guide d'ondes rayonnant.Such an embodiment makes it possible to obtain repeated coupling coefficients on the order of -40 dB compared to the power level transmitted in the guide of radiating waves.

La longueur de la cavité résonante 1 est la plus réduite possible de manière que le volume intérieur de cette cavité résonante résonne en cavité selon un mode fondamental TE011. Dans un tel mode de réalisation de la cavité résonante, toute directivité est supprimée et le coefficient de couplage reste identique que le guide d'ondes rayonnant soit alimenté en amont ou en aval.The length of the resonant cavity 1 is as small as possible so that the interior volume of this resonant cavity resonates in the cavity according to a fundamental mode TE 011 . In such an embodiment of the resonant cavity, any directivity is eliminated and the coupling coefficient remains identical whether the radiating waveguide is supplied upstream or downstream.

La cavité résonante en mode fondamental TE011 est court-circuitée à ses extrémités et comporte une fente résonante en demi-onde 5.The TE 011 fundamental mode resonant cavity is short-circuited at its ends and has a resonant half-wave slot 5.

La fente résonante en demi-onde est réalisée sur la grande face extérieure de la cavité résonante tournée vers le véhicule ferroviaire.The resonant half-wave slot is made on the large outer face of the resonant cavity facing the rail vehicle.

La fente résonante en demi-onde est orientée perpendiculairement aux fentes 6 du guide d'ondes rayonnant.The resonant half-wave slot is oriented perpendicular to the slots 6 of the radiating waveguide.

Cette fente résonante en demi-onde rayonne l'énergie couplée depuis le guide d'ondes rayonnant vers la cavité résonante en mode TE011.This half-wave resonant slot radiates the coupled energy from the radiating waveguide to the resonant cavity in TE 011 mode.

Le rayonnement de la fente résonante en demi-onde s'effectue en polarisation linéaire perpendiculaire aux fentes régulières du guide d'ondes rayonnant.The radiation from the resonant half-wave slit takes place in linear polarization perpendicular to regular slots of the radiating waveguide.

Ces fentes régulières sont dites fentes de transmission et de mesure de vitesse du guide d'ondes.These regular slots are called transmission and speed measurement of the waveguide.

Ce rayonnement autorise ainsi un découplage de l'ordre de 15 dB par rapport aux signaux transmis par les fentes de transmission et de mesure de vitesse du guide d'ondes.This radiation thus authorizes a decoupling of the order by 15 dB compared to the signals transmitted by the slots of transmission and speed measurement of the waveguide.

L'onde porteuse se propageant dans le guide d'ondes, qui est un signal sinusoïdal pur, est couplée localement vers le véhicule ferroviaire au moyen de la cavité résonante et de sa fente résonante en demi-onde.The carrier wave propagating in the waveguide, which is a pure sinusoidal signal, is locally coupled to the rail vehicle by means of the resonant cavity and its resonant half-wave slot.

Ce signal sinusoïdal est modulé localement.This sinusoidal signal is locally modulated.

Pour ce faire, un dispositif de modulation, par exemple une diode du type Schottky, est disposé entre les bords de la fente résonante en demi-onde en un point de haute impédance à la fréquence voulue.To do this, a modulation device, by example a Schottky type diode, is placed between the edges of the half-wave resonant slit at a point of high impedance at the desired frequency.

La figure 3B représente la cavité résonante et son dispositif de modulation.FIG. 3B represents the resonant cavity and its modulation device.

Cette diode est polarisée au moyen d'un courant continu appliqué à ses bornes et est susceptible de court-circuiter la fente résonante en demi-onde au rythme de la polarisation, la fente présentant en ce point et pour la fréquence de travail considérée un point de haute impédance.This diode is polarized by means of a current applied to its terminals and is likely to short-circuit the resonant half-wave slit to the rhythm of the polarization, the slit presenting at this point and for the working frequency considered a point of high impedance.

On produit ainsi une modulation en amplitude du signal sinusoïdal pur prélevé le long du guide d'ondes rayonnant.This produces an amplitude modulation of the signal pure sine wave taken along the radiating waveguide.

Le coefficient de couplage existant entre le guide d'ondes rayonnant et la cavité résonante étant de l'ordre de -40 dB, la désadaptation liée à ce court-circuit au rythme de la modulation n'est pas décelable dans le guide d'ondes rayonnant.The coupling coefficient existing between the guide of radiating waves and the resonant cavity being of the order of -40 dB, the mismatch linked to this short circuit to the rhythm modulation is not detectable in the waveguide radiant.

De même, si l'on considère un niveau de fréquence de puissance hyperfréquence dans le guide d'ondes rayonnant, le signal modulé n'est réinjecté au mieux qu'à -80 dB sous ce niveau de référence vers le guide d'ondes rayonnant, soit - 40 dB dans le sens guide d'ondes rayonnant vers cavité résonante et -40 dB dans le sens cavité résonante vers guide d'ondes rayonnant.Similarly, if we consider a frequency level of microwave power in the radiating waveguide, the at best, the modulated signal is only fed back to -80 dB below reference level towards the radiating waveguide, ie - 40 dB in the waveguide direction radiating towards cavity resonant and -40 dB in the direction of resonant cavity towards guide of radiating waves.

Le signal modulé produit dans la cavité résonante n'est donc ni transmis le long du guide d'ondes rayonnant, ni répercuté en amont ou en aval de la cavité résonante.The modulated signal produced in the resonant cavity is therefore neither transmitted along the radiating waveguide, nor passed upstream or downstream of the resonant cavity.

Un dispositif 8 génère le signal représentant l'information à transmettre vers le véhicule ferroviaire.A device 8 generates the signal representing the information to be transmitted to the rail vehicle.

Ce signal représentant l'information à transmettre est par exemple un signal composé d'une suite binaire.This signal representing the information to be transmitted is for example a signal composed of a binary sequence.

Le débit binaire possible est important et n'est limité que par les temps de commutation de la diode Schottky et la fréquence du signal sinusoïdal pur.The possible bit rate is important and is not limited only by switching times of the Schottky diode and the frequency of the pure sinusoidal signal.

A titre d'ordre de grandeur, plusieurs mégabits par seconde peuvent être accessibles.As an order of magnitude, several megabits per second can be accessed.

A titre d'exemple, le dispositif 8 générant le signal représentant l'information à transmettre peut comporter un dispositif du type picocontrôleur mémorisant sur une mémoire du type EEPROM une trame et générant cette trame de manière répétitive à destination de la diode Schottky dés lors qu'une énergie lui est fournie. By way of example, the device 8 generating the signal representing the information to be transmitted may include a picocontroller type device memorizing on a memory of the EEPROM type a frame and generating this frame so repetitive to the Schottky diode from then that energy is supplied to it.

D'autres dispositifs appropriés susceptibles de polariser la diode Schottky au rythme de l'information à transmettre peuvent être utilisés.Other suitable devices which may polarize the Schottky diode to the rhythm of the information to forward can be used.

L'énergie présente dans la cavité résonante étant très faible, de l'ordre de 40 dB sous le niveau de puissance présent dans le guide d'ondes rayonnant, il est possible de disposer judicieusement le dispositif 8 générant le signal représentant l'information à transmettre à l'intérieur de la cavité résonante sans perturber notablement ni le fonctionnement de ce circuit électronique, ni la résonance en mode fondamental de la cavité résonante.The energy present in the resonant cavity being very low, around 40 dB below the power level present in the radiating waveguide, it is possible to judiciously arrange the device 8 generating the signal representing the information to be transmitted inside the resonant cavity without significantly disturbing either the functioning of this electronic circuit, nor the resonance in fundamental mode of the resonant cavity.

La figure 3C représente la cavité résonante et son dispositif générant le signal représentant l'information à transmettre.FIG. 3C represents the resonant cavity and its device generating the signal representing the information to transmit.

L'alimentation de ce dispositif 8 générant le signal représentant l'information à transmettre, par exemple au moyen d'une source de tension 5V sous quelques milliampères, peut avantageusement être fournie par télé-alimentation au moyen d'un signal basse fréquence fonctionnant à quelques centaines de kilo hertz voire à quelques méga hertz.The power of this device 8 generating the signal representing the information to be transmitted, for example to using a 5V voltage source under a few milliamps, can advantageously be supplied by remote power to by means of a low frequency signal operating at a few hundreds of kilo hertz or even a few mega hertz.

La figure 4 est une vue générale du dispositif de transmission d'informations et de son dispositif de télé-alimentation.Figure 4 is a general view of the device transmission of information and its remote power device.

Ce signal basse fréquence est couplé magnétiquement à la cavité résonante au moyen de deux boucles résonantes 9, 10A ou 10B.This low frequency signal is magnetically coupled to the resonant cavity by means of two resonant loops 9, 10A or 10B.

A titre d'exemple, une première boucle résonante 9 du type série est associée à l'émission d'énergie et une seconde boucle résonante 10A, 10B du type parallèle est associée à la réception d'énergie, émission et réception d'énergie étant effectuées à la fréquence de télé-alimentation.By way of example, a first resonant loop 9 of the series type is associated with energy emission and a second resonant loop 10A, 10B of the parallel type is associated with energy reception, emission and reception of energy being carried out at the remote power frequency.

La boucle d'émission d'énergie 9 est solidaire du véhicule ferroviaire (non représenté) et génère en permanence un peu d'énergie, par exemple d'une valeur inférieure au watt, à destination d'au moins une boucle réceptrice d'énergie 10A, 10B solidaire de la cavité résonante 1.The energy emission loop 9 is integral with the rail vehicle (not shown) and generates permanence a little energy, for example worth less than a watt, for at least one loop energy receiver 10A, 10B integral with the cavity resonant 1.

La boucle de réception d'énergie 10A, 10B télé-alimente le dispositif 8 générant le signal représentant l'information à transmettre au passage du véhicule ferroviaire.The energy reception loop 10A, 10B remotely powers the device 8 generating the signal representing information to be transmitted when the vehicle passes rail.

Dés lors et malgré le fait que le rayonnement hyperfréquence issu de la boucle d'émission d'énergie 9 est mal contrôlé et peut se propager par réflexion ou diffraction relativement loin de la cavité résonante, le signal représentant l'information à transmettre vers le véhicule ferroviaire ne sera généré que lorsque le dispositif 8 générant le signal représentant l'information à transmettre sera alimenté par télé-alimentation.From then on and despite the fact that the radiation microwave from the energy emission loop 9 is poorly controlled and can spread by reflection or diffraction relatively far from the resonant cavity, the signal representing the information to be transmitted to the rail vehicle will only be generated when the device 8 generating the signal representing the information to transmit will be powered by remote power.

La protection contre la diaphonie est obtenue du fait que le rayonnement hyperfréquence issu de la boucle d'émission d'énergie 9 est un signal de basse fréquence dont l'amplitude décroít conformément aux lois de la magnétostatique c'est à dire en raison inverse du cube de la distance entre émetteur et récepteur.Protection against crosstalk is obtained because that the microwave radiation from the loop energy emission 9 is a low frequency signal whose the amplitude decreases in accordance with the laws of magnetostatic ie inverse of the cube of the distance between transmitter and receiver.

Conformément à un mode de réalisation possible, une première boucle de réception d'énergie 10A est disposée en amont de la cavité résonante 1 et fournie à l'approche ou lors de l'éloignement du véhicule ferroviaire une tension d'alimentation continue V1, une seconde boucle de réception d'énergie 10B est disposée en aval de la cavité résonante 1 et fournie lors de l'éloignement ou à l'approche du véhicule ferroviaire une tension d'alimentation continue V2.In accordance with a possible embodiment, a first energy reception loop 10A is arranged upstream of the resonant cavity 1 and supplied, when approaching or when moving away from the railway vehicle, a continuous supply voltage V 1 , a second energy reception loop 10B is arranged downstream of the resonant cavity 1 and supplied when moving away from or when approaching the railway vehicle a continuous supply voltage V 2 .

Le dispositif 8 générant le signal représentant l'information à transmettre peut ainsi être télé-alimenté continûment lors du passage du véhicule ferroviaire de l'amont à l'aval de la cavité résonante ou inversement.The device 8 generating the signal representing the information to be transmitted can thus be remotely supplied continuously during the passage of the railway vehicle from upstream downstream of the resonant cavity or vice versa.

La transition de la tension continue V1 à la tension continue V2 ou inversement peut être utilisée pour fournir un signal de passage du véhicule ferroviaire au-dessus de la cavité résonante. The transition from DC voltage V 1 to DC voltage V 2 or vice versa can be used to provide a signal for the railway vehicle to pass over the resonant cavity.

La transition de la tension continue V1 à la tension continue V2 peut également être utilisée pour fournir un signal indiquant le sens de passage amont vers aval du véhicule ferroviaire.The transition from DC voltage V 1 to DC voltage V 2 can also be used to provide a signal indicating the direction of passage upstream to downstream of the rail vehicle.

La transition de la tension continue V2 à la tension continue V1 peut également être utilisée pour fournir un signal indiquant le sens de passage aval vers amont du véhicule ferroviaire.The transition from DC voltage V 2 to DC voltage V 1 can also be used to provide a signal indicating the direction of passage downstream to upstream of the rail vehicle.

La figure 5 représente un mode de réalisation du dispositif de réception de l'onde porteuse modulée disposé sur le mobile.FIG. 5 represents an embodiment of the modulated carrier wave receiving device arranged on the mobile.

Ce dispositif de réception 11 est constitué d'une antenne 12 connectée à une chaíne 13 d'amplification, de filtrage à la fréquence du signal sinusoïdal pur et de détection d'amplitude et a pour fonction de restituer l'information transmise.This reception device 11 consists of a antenna 12 connected to an amplification chain 13, filtering at the frequency of the pure sinusoidal signal and amplitude detection and has the function of reproducing the information transmitted.

Claims (36)

  1. An information transmission device for systems using radiating waveguides (2) along which a mobile travels, said device including:
    means for injecting an unmodulated carrier wave into said radiating waveguide,
    means for localized sampling (3, 4) along said radiating waveguide (2) of some of the energy of said unmodulated carrier wave, and
    means (5) for radiating said carrier wave to said mobile characterized in that the device includes modulator means (7, 8) for modulating said unmodulated carrier wave using a local modulation signal representing information addressed to said mobile.
  2. A device according to claim 1 including a resonant cavity (1) on one side of said radiating waveguide (2).
  3. A device according to claim 2 wherein said resonant cavity (1) has a length such that its interior volume resonates in a TE011 fundamental mode.
  4. A device according to claim 3 wherein the TE011 fundamental mode resonant cavity (1) is short-circuited at its ends.
  5. A device according to any of claims 1 to 4 wherein said sampling means (3, 4) comprise a respective directional coupler (3, 4) on facing sides of said radiating waveguide (2) and said resonant cavity (1).
  6. A device according to claim 5 wherein said directional couplers (3, 4) comprise at least one aperture.
  7. A device according to any of claims 2 to 5 wherein said radiating means (5) include a half-wave resonant slot in said resonant cavity (1).
  8. A device according to claim 7 wherein said half-wave resonant slot (5) is on a large exterior face of said resonant cavity (1) facing towards said mobile.
  9. A device according to either of claims 7 and 8 wherein said half-wave resonant slot (5) is perpendicular to the slots (6) of said radiating waveguide (2).
  10. A device according to any of claims 7 to 9 wherein said modulator means (7, 8) include a modulator device (7) between the edges of said half-wave resonant slot (5) at a point of high impedance at the required frequency.
  11. A device according to claim 10 wherein said modulator device (7) includes a Schottky diode biased by a direct current applied to the terminals of said diode which short-circuits said half-wave resonant slot when so biased.
  12. A device according to either of claims 10 and 11 wherein a device (8) generating the signal representing information to be transmitted biases said modulator device (7).
  13. A device according to any of claims 10 to 12 wherein said device (8) generating the signal representing information to be transmitted is inside said resonant cavity (1).
  14. A device according to any of claims 10 to 13 wherein said device (8) generating the signal representing information to be transmitted is supplied with power by remote power feed means.
  15. A device according to claim 14 wherein said power feed to said device (8) generating the signal representing information to be transmitted is effected by means of a signal at a low frequency between a few hundred kilohertz and a few megahertz.
  16. A device according to either of claims 14 and 15 including a loop (9) attached to said mobile adapted to emit energy to at least one energy receiver loop (10A, 10B) attached to the resonant cavity (1) to effect said remote power feed.
  17. A device according to claim 16 including a first energy receiver loop (10A) on the upstream side of said resonant cavity (1) to provide a direct current power supply voltage V1 when said mobile is approaching or moving away and a second energy receiver loop (10B) on the downstream side of said resonant cavity (1) to provide a direct current power supply voltage V2 when said mobile is moving away or approaching.
  18. A device according to any of the preceding claims including a device (11) for receiving the modulated carrier wave on said mobile.
  19. A device according to claim 18 wherein said receiver device (11) includes an antenna (12) connected to a system (13) providing amplification, filtering at the frequency of said pure sinusoidal signal and amplitude detection.
  20. An information transmission method for systems using radiating waveguides along which a mobile travels, said method being characterized in that it includes the following principal steps:
    injecting an unmodulated carrier wave into said radiating waveguide,
    localized sampling along said radiating waveguide of some of the energy of said unmodulated carrier wave,
    modulating said unmodulated carrier wave using a local modulation signal representing information addressed to said mobile, and
    radiating said modulated carrier wave to said mobile.
  21. A method according to claim 20 wherein the step of localized sampling of some of the energy of said unmodulated carrier wave is effected by means of directional means (3, 4) disposed on facing sides of said radiating waveguide (2) and said resonant cavity (1).
  22. A method according to either of claims 20 and 21 comprising a step wherein a resonant cavity (1) disposed on one side of said radiating waveguide (2) resonates in a TE011 fundamental mode.
  23. A method according to claim 20 wherein the step of using a local modulation signal to modulate said unmodulated carrier wave is effected by applying to the terminals of a modulator device (7) a direct current to bias said modulator device and to short-circuit a half-wave resonant slot (5) when the bias is applied, said resonant slot forming part of said resonant cavity (1).
  24. A method according to claim 23 wherein said modulator device (7) is biased by means of a signal representing information to be transmitted.
  25. A method according to either of claims 23 and 24 comprising a step of memorizing a frame in an EEPROM type memory by means of a picocontroller type device and of generating said frame repetitively for application to said modulator device (7) as soon as energy is supplied to it.
  26. A method according to any of claims 23 to 25 including a step of energizing a device (8) generating the signal representing information to be transmitted by remote power feed means, this being carried out by emitting energy from an emission loop attached to the mobile and by receiving this energy through at least one receiver loop located on said waveguide.
  27. A method according to claim 26 wherein said remote power feed to said device (8) generating the signal representing information to be transmitted is effected by means of a signal at a low frequency between a few hundred kilohertz and a few megahertz.
  28. A method according to claim 27 including a step of magnetically coupling said low-frequency signal to said resonant cavity by means of two resonant loops (9, 10A or 10B).
  29. A method according to claim 28 including a step of associating said serial type first resonant loop (9) with the emission of energy and said parallel type second resonant loop (10A, 10B) with the reception of energy.
  30. A method according to claim 29 wherein said emission and said reception of energy are effected at the remote power feed frequency.
  31. A method according to any of claims 26 to 30 wherein said remote power feed to said device (8) generating the signal representing information to be transmitted is effected by means of said receiver loop (10A, 10B) when said mobile passes.
  32. A method according to claim 31 wherein a first energy receiver loop (10A) on the upstream side of said resonant cavity (1) provides a when said mobile is approaching or moving away direct current voltage V2.
  33. A method according to claim 32 wherein the transition from the direct current voltage V1 to the direct current voltage V2 or vice versa provides a signal indicating passage of said mobile over said resonant cavity.
  34. A method according to either of claims 32 and 33 wherein the transition from the direct current voltage V1 to the direct current voltage V2 produces a signal indicating that said mobile passes in an upstream to downstream direction.
  35. A method according to either of claims 32 and 33 wherein the transition from the direct current voltage V2 to the direct current voltage V1 produces a signal indicating that said mobile passes in a downstream to upstream direction.
  36. A method according to any of claims 20 to 28 including a step of reconstituting information transmitted by means of a receiver device (11) comprising an antenna (12) connected to a system (13) providing amplification, filtering at the frequency of the pure sinusoidal signal and amplitude detection.
EP97400236A 1996-02-09 1997-02-03 Device and method for transmission of information for systems with radiating waveguides Expired - Lifetime EP0789419B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730299T SI0789419T1 (en) 1996-02-09 1997-02-03 Device and method for transmission of information for systems with radiating waveguides

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601620A FR2744865B1 (en) 1996-02-09 1996-02-09 INFORMATION TRANSMISSION DEVICE AND METHOD FOR RADIANT WAVEGUIDE SYSTEM
FR9601620 1996-02-09

Publications (2)

Publication Number Publication Date
EP0789419A1 EP0789419A1 (en) 1997-08-13
EP0789419B1 true EP0789419B1 (en) 2001-12-12

Family

ID=9489034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400236A Expired - Lifetime EP0789419B1 (en) 1996-02-09 1997-02-03 Device and method for transmission of information for systems with radiating waveguides

Country Status (23)

Country Link
US (1) US6034646A (en)
EP (1) EP0789419B1 (en)
JP (1) JP3839118B2 (en)
KR (1) KR100451066B1 (en)
CN (1) CN1096754C (en)
AT (1) ATE210898T1 (en)
AU (1) AU709313B2 (en)
BG (1) BG62868B1 (en)
BR (1) BR9700897A (en)
CA (1) CA2197110C (en)
CZ (1) CZ290348B6 (en)
DE (1) DE69708945T2 (en)
DK (1) DK0789419T3 (en)
ES (1) ES2167688T3 (en)
FR (1) FR2744865B1 (en)
HU (1) HU219939B (en)
IL (1) IL120157A (en)
PL (1) PL181409B1 (en)
PT (1) PT789419E (en)
RU (1) RU2168273C2 (en)
SI (1) SI0789419T1 (en)
SK (1) SK284030B6 (en)
ZA (1) ZA97974B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3617374B2 (en) * 1998-07-07 2005-02-02 株式会社村田製作所 Directional coupler, antenna device, and transmission / reception device
FR2873341B1 (en) * 2004-07-21 2014-08-15 Siemens Transp Systems ELECTROMAGNETIC COUPLING DEVICE, VEHICLE INCORPORATING SAID DEVICE
FR2916907B1 (en) * 2007-05-31 2010-09-10 Alstom Transport Sa COMMUNICATION DEVICE FOR RAILWAY VEHICLE
FR3009818B1 (en) * 2013-08-20 2015-09-18 Alstom Transport Sa RAIL SECURITY DEVICE AND DETECTION METHOD THEREOF
US9606224B2 (en) * 2014-01-14 2017-03-28 Alstom Transport Technologies Systems and methods for vehicle position detection
TWI637607B (en) * 2017-06-23 2018-10-01 智易科技股份有限公司 Wireless communication module
WO2021210003A1 (en) * 2020-04-16 2021-10-21 Motx Ltd. Optical communication link for moving elements
CN113063994B (en) * 2021-03-24 2022-06-14 中国人民解放军国防科技大学 Active super-surface strong irradiation field performance testing device and system
KR102507952B1 (en) * 2022-02-11 2023-03-09 주식회사 에이치엘클레무브 Antenna module

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546633A (en) * 1966-01-04 1970-12-08 Gen Electric Electrically tunable microwave band-stop switch
GB1240588A (en) * 1968-07-30 1971-07-28 Japan National Railway Improvements in or relating to communication control systems
JPS5521489B2 (en) * 1972-10-05 1980-06-10
ES2039412T3 (en) * 1986-12-12 1993-10-01 Gec Alsthom Sa DEVICE FOR THE TRANSMISSION OF INFORMATION AND / OR INSTRUCTIONS WITH A BROAD SLIDING BAND BETWEEN A MOBILE ELEMENT AND A CONTROL STATION.
CA1285050C (en) * 1986-12-15 1991-06-18 Yoshizo Shibano Roadside beacon system
FR2623460B1 (en) * 1987-11-20 1990-11-16 Alsthom IDENTIFICATION TAG WHEN MOVING A MOBILE AT A GIVEN POINT
US5136225A (en) * 1989-04-14 1992-08-04 Gec Alsthom Sa Device for guiding vehicles on a virtual track
FR2680876B1 (en) * 1991-08-30 1993-11-19 Gec Alsthom Sa MICROWAVE ELECTROMAGNETIC WAVE LOCATION SYSTEM.
FR2730817B1 (en) * 1995-02-21 1997-04-04 Gec Alsthom Transport Sa DEVICE FOR LOCATING A VEHICLE MOVING ALONG MEANS OF ELECTROMAGNETIC WAVE PROPAGATION
FR2736225B1 (en) * 1995-06-27 1997-08-01 Gec Alsthom Transport Sa DEVICE FOR ELIMINATING CROSS-SECTION PROBLEMS DURING THE LOCATION OF A VEHICLE MOVING ALONG ELECTROMAGNETIC WAVE PROPAGATION MEANS

Also Published As

Publication number Publication date
HU219939B (en) 2001-09-28
FR2744865B1 (en) 1998-03-20
HU9700343D0 (en) 1997-03-28
PL181409B1 (en) 2001-07-31
CN1096754C (en) 2002-12-18
ATE210898T1 (en) 2001-12-15
CA2197110A1 (en) 1997-08-10
BR9700897A (en) 1999-01-12
BG62868B1 (en) 2000-09-29
US6034646A (en) 2000-03-07
KR100451066B1 (en) 2005-01-13
PT789419E (en) 2002-05-31
BG101191A (en) 1997-09-30
HUP9700343A2 (en) 1997-12-29
DK0789419T3 (en) 2002-04-08
CA2197110C (en) 2003-08-05
SI0789419T1 (en) 2002-06-30
JPH09265597A (en) 1997-10-07
RU2168273C2 (en) 2001-05-27
CZ290348B6 (en) 2002-07-17
SK18397A3 (en) 1999-02-11
KR970062739A (en) 1997-09-12
CN1164779A (en) 1997-11-12
ES2167688T3 (en) 2002-05-16
IL120157A (en) 1999-10-28
EP0789419A1 (en) 1997-08-13
PL318367A1 (en) 1997-08-18
SK284030B6 (en) 2004-08-03
AU709313B2 (en) 1999-08-26
FR2744865A1 (en) 1997-08-14
DE69708945T2 (en) 2002-08-01
ZA97974B (en) 1998-04-16
IL120157A0 (en) 1997-06-10
CZ38097A3 (en) 1997-08-13
AU1250097A (en) 1997-08-14
HUP9700343A3 (en) 2000-05-29
DE69708945D1 (en) 2002-01-24
JP3839118B2 (en) 2006-11-01

Similar Documents

Publication Publication Date Title
EP0789419B1 (en) Device and method for transmission of information for systems with radiating waveguides
US7945168B2 (en) Free-space quantum communications system and process operative absent line-of-sight
EP0963064B1 (en) Transmission and reception apparatus of a signal encrypted based on deterministic chaos
EP1227024A1 (en) Device and method for intermittently locating a railway vehicle along a track with beacons and antenna for such a device
US7715727B2 (en) System and method for transmitting analog signals with a modulating retroreflector and hybrid amplitude and frequency modulation
JPH08172215A (en) Integrated transmitter-receiver
US20110076026A1 (en) Method for encoding and decoding of optical signals
EP0049722A1 (en) Apparatus for indicating trajectory change
JPS62502817A (en) Optical homodyne detection method and device
CA1298385C (en) Beacon for identifying the passage of an object at a given point
Lu'c et al. Electrical diagnostics of the amplifier operation and a feasibility of signal registration on the basis of the voltage saturation effect in junction laser diodes
Hong et al. Optimised message extraction in laser diode based optical chaos communications
CN209748573U (en) On-chip external injection laser structure and quantum key distribution system transmitting terminal
EP3235149B1 (en) Optoelectronic component for generating and radiating a hyperfrequency signal
FR2873341A1 (en) Electromagnetic coupling device for electric remote power feeding system of vehicle, has secondary coils placed on sides of power transmitting coil, where current passing through secondary coils is in same direction as that in power coil
Lytollis et al. Infra-red optical communication systems∗
FR2695759A1 (en) Test aerial for transmitting test signals to radar receiver - includes optical waveguide carrying signal to transducer built on common substrate with dipole transmitters
Wennberg On Demand Generation of Single Photons Locked to Rubidium Transitions
FR2718307A1 (en) Full-duplex data transmission method e.g. for optical, radio transmission
Lanzagorta Underwater Optical Communications: Technology
FR2740418A1 (en) Point-to-point railway track communication, especially for staff safety
EP0907896A1 (en) Passive modulation of electromagnetic signals
Ma et al. Terahertz Acoustic Optical Modulator and its Application on Free Space Communication
FR2805047A1 (en) Method of detecting traffic using radar involves using electromagnetic wave and filtering spectral beam with target detection when beam amplitude is above set value
FR2716591A1 (en) Polarisation diversity for long distance optical transmission

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 970206;LT PAYMENT 970206;LV PAYMENT 970206;RO PAYMENT 970206;SI PAYMENT 970206

17P Request for examination filed

Effective date: 19971206

17Q First examination report despatched

Effective date: 20000814

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19970206;LT PAYMENT 19970206;LV PAYMENT 19970206;RO PAYMENT 19970206;SI PAYMENT 19970206

REF Corresponds to:

Ref document number: 210898

Country of ref document: AT

Date of ref document: 20011215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: CABINET ROLAND NITHARDT CONSEILS EN PROPRIETE INDU

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20011212

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

REF Corresponds to:

Ref document number: 69708945

Country of ref document: DE

Date of ref document: 20020124

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2167688

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20020305

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20020400929

Country of ref document: GR

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: SI

Ref legal event code: IF

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20090216

Year of fee payment: 13

Ref country code: IE

Payment date: 20090220

Year of fee payment: 13

Ref country code: ES

Payment date: 20090219

Year of fee payment: 13

Ref country code: DK

Payment date: 20090213

Year of fee payment: 13

Ref country code: AT

Payment date: 20090218

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20090123

Year of fee payment: 13

Ref country code: NL

Payment date: 20090217

Year of fee payment: 13

Ref country code: FI

Payment date: 20090217

Year of fee payment: 13

Ref country code: DE

Payment date: 20090219

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20090226

Year of fee payment: 13

Ref country code: GB

Payment date: 20090219

Year of fee payment: 13

Ref country code: CH

Payment date: 20090217

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20090216

Year of fee payment: 13

Ref country code: IT

Payment date: 20090221

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090408

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090213

Year of fee payment: 13

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20100803

BERE Be: lapsed

Owner name: S.A. *GEC ALSTHOM TRANSPORT

Effective date: 20100228

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20100901

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20100913

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101029

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100203

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100803

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100203

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100301

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110329

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100203

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100203

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100204